From 0e9054910478a9b8340808b74fcb2645195f5a2b Mon Sep 17 00:00:00 2001
From: Mike McQuaid <mike@mikemcquaid.com>
Date: Thu, 14 Jul 2016 10:51:22 +0100
Subject: [PATCH] test-bot: don't pull if unnecessary.

---
 Library/Homebrew/dev-cmd/test-bot.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Library/Homebrew/dev-cmd/test-bot.rb b/Library/Homebrew/dev-cmd/test-bot.rb
index bb03a50e52..9bb7162f97 100644
--- a/Library/Homebrew/dev-cmd/test-bot.rb
+++ b/Library/Homebrew/dev-cmd/test-bot.rb
@@ -354,7 +354,7 @@ module Homebrew
       elsif @url
         # TODO: in future Travis CI may need to also use `brew pull` to e.g. push
         # the right commit to BrewTestBot.
-        unless travis_pr
+        if !travis_pr || ENV["ghprbActualCommit"].chomp != `git rev-parse HEAD`
           diff_start_sha1 = current_sha1
           test "brew", "pull", "--clean", @url
           diff_end_sha1 = current_sha1